Leon b



m" Mmm) L, B. CARRIGABURU.

STEAM AGTUATBD VALVE. l No. 321,581. Patented July 7, 1885.

Nrrnn rares arent Ommen@ LEON B. OARRICABURU, OF NEV YORK, N. Y.

STjEAVi-CTUATED VALVE.

lllnCFICJiTION 'Emailing part of Letters Patent No. 321,581, dated July 7, 1835.

Application liled llIaroh 3l), 1855. (No model.)

To @ZZ :whom 72mg/ concern:

Be it known that l, LEON B. Gannronnunu, ofthe city and State of New York, have invented an Improvement in Dupiex Steam- Aetuated Valves, of which the following is a specification.

This invention is an improvement upon the device for which Letters Patent No. 303,704 were granted to me August 19,1884,and a reterenee is hereby made to said patent for the details of Construction and for the inode of operation employed in each engine.-

In the drawings, Figure l is a diagram representing parts of the two engine -eylinders with the valve-moving pistons and the ports in my duplex engine. Fig. 2 is a Cross seetion in smaller size representing the two engine-cylinders and valve-moving pistons and ports in my duplex engine.

I make use of two cylinders placed side by side. One cylinder is provided with a piston and the ports 4 5 6 7, and with avalve, F, valve-moving pistons G G in the cylinders H H', the saine as in my aforesaid patent, and the operation of the valve F, in Vadmitting the steam and in allowing the exhaust to pass awa-y by the port M, is identically the saine as in my aforesaid patent but I provide erossports between the Valve-moving cylinders of one engine and the main cylinder of the adjacent engine, so that the valve of one engine is moved through the agency of the other engine, thereby causing the piston of the first engine to complete its stroke and remain quiescent until the piston of the seeond engine directs the steam in such a manner as to cause the movement of the valve of the rst engine and the reverse.

By reference to my aforesaid patent the movement of the piston and valve of one engine will be fully understood; and it is only necessary to describe the manner in which the ports Cross from the main Cylinder of one engine to the valve-moving pistons of the adjoining. engine in order that the Construction and operation of the present improvements may be apparent.

It is to be presumed that the piston C of the cylinder No. l is moving` in the direction indieated by the arrow. rlhe steam will pass in from the ohest C2 by the port 7, and the exhaust is opened by the port 5 to M. As soon as the piston C covers over the port 5, the vapors are compressed in the cylinder and the piston cushioned, theport 4 being covered by the valve F. The port 20,1eading from the cylinder No. l to the valve-moving cylinder HZ of the cylinder No. 2, is opened, when the piston C passes by it and the steam acts in the cylinder H2 of engine No. 2 to move the piston G2, rod, and the valve F from the position shown by full lines, so that the steam will be admitted by the port 40 to act upon the piston C of the engine No. 2. The movement oi the Valve F opens the exhaust in cylinder ilo. 2 through G0 to M2, and in so doing the ports 8, 2, and 3 are opened to the exhaust in the cylinder No. 2 to relieve the pressure behind lhe valvemoving piston G', and at both sides of the valve-moving piston G ofthe engine No. l, and the exhaust. continues at eaeh sideof the piston G ofthe engine No. l until the piston O of the engine No. 2 passes over the port 2 leading to the engine No.1, and as soon asthe movement of the pistou C allows the live steam to pass into the port 2 C the port 3 being opened to the exhaust by the port GO of engine No. 2) the steam acts through 2 upon the piston G to shift the valve F of engine No. i and admit steam bythe port et to act upon the piston C. The piston C now remains at the right-hand end of the engine No. 2, and the piston C starts from the left-hand end of engine No. l, and inits movementthe steam acts through theport 5, (that is closed by the valve F from the exhaust BL) and the live steam travels through the port 3() to the cylinder H2 oi' engine No. 2, and acts against the pistonG? to move the same back out of the way; but it does not move the valve F', and when the piston C of engine No. 1 uncovers the port 20 of engine No. 2, piston G2 of engine No. 2 remains stationary,the pressure being balanced. The piston C of engine No. 1 continuing to move to the right, the exhaustthereof is open through G to M, and by 80 and 90 to both sides of the piston H" of engine No. 2; but as the piston O passes over the end of the port 6 and cushions against the confined vapors, the live steam passes by 80 into Hl of engine No. 2 and acts upon the piston G* to move the valve F of engine No. 2, and admit steam by the ICO port 70 to act upon the piston C of engine No. 2, and move the same to the left. These operations are repeated, the valve-moving piston being drawn back out of the way in each instance after having moved the valve, and the piston of one engine remaining quiescent at the end of the stroke until its valve is moved by the steam admitted from the cylinder of the other engine upon the completion of the stroke of the piston, thus causing the pistons to move with regularity, the motion of one piston commencing slightly before the piston of the other engine stops, so as to render uniform the movements of pumps actuated by these engines, and there are no devices liable to become misplaced or out of order, and the whole of the parts are inclosed and not liable to external injury.

It is usually preferable to allow sufficient space between the ports 2 and 8 and the ends of the cylinders H and H, for the exhauststeam to be confined and cushion the respective pistons G and G", and in order that the live steam may pass in behind such pistons there is a small channel from the upper end of each port leading toward the cylinder-head, as is usual in this style of engine. The ports 20 and 80 are similarly constructed. It will also be understood that the pistons C and C of the respective engines will cushion upon the exhaust-steam at the respective ends of the stroke, so as to prevent concussion, and that the live steam will continue to act against the piston until the piston of the other engine approaches the end of its stroke and causes the movement of the valve of the rst engine.

India-rubber or other material may be introduced at I), as in the aforesaid patent, to prevent concussion of the valve against the end of the rod of the valve-moving piston.

Upon reference to my Patent No. 303,703, it will be seen that the valves are moved in a manner corresponding generally to that hereinbefore described, and I remark that two such engines, as shown in said patent, may be arranged to operate together and form a duplex pumping-engine by arranging the ports leading to the valve-moving pistons to cross from one engine to the other in the manner herein described, and I remark thatV the valves may be either D or B valves, as fully set forth in said patents.

In my appl-ication No. 160,583 for a patent, filed March 30, 1885, the two pistons are constantly in motion, but in my present application one piston remains stationary until the other has nearly completed its movement.

I do not claim a duplex engine having crossing-ports, and in which the ports from one steam-cylinder to the valve-moving cylinder of the other engine pass through a moving part, such as a valve, that serves to close or vary the action of the steam according to its position, as such has before been proposed or used.

I claim as my inventionv 1. The combination,with two cylinders and their pistons and valves and valve-actuating pistons, of the ports 2 3 8 9 and 20 30 80 90, eX- tending from the valve-moving cylinders ofone engine to the cylinder and ports of the opposite engine, substantially as set forth.

2. In a duplex engine having steam-actuated valves, the combination, with two cylinders, their pistons and valves, of four valve-moving pistons with their cylinders having ports crossing from one engine to the other, substantially as specified, by means of which one engine causes the valve of the other to be moved just before stopping, and remains quiescent until its valve is moved in its turn by steam from the other engine, without the intervention of mechanism to open, close, or control said crossing-ports, substantially as set forth.

Signed by me this 27th day of March, A. I). 1885.

L. B. CARRICABURU.

Witnesses:

Gno. T. PINCKNEY, WALLACE L. SERRELL. 

